Dr. Tina Burke, Walter Reed Army Institute of Research, sleep research scientist leads the Zumba class to teach Soldiers and civilians dance moves for O Day carnival in Silver Spring, Maryland, Aug.12, 2022. WRAIR held its annual Organizational Day. Hundreds of people turned out to dunk the command team in water, play basketball, eat good food and sweat it out with Zumba. (U.S. Army photo by Tyra Breaux/Released)